#!/usr/bin/env python3
import os
import sys
import time
import json
import PyQt5.QtWidgets as QtWidgets
import squashfs


app = QtWidgets.QApplication(sys.argv)
window = QtWidgets.QMainWindow()
widget = QtWidgets.QWidget()
layout = QtWidgets.QGridLayout()
widget.setLayout(layout)
window.setCentralWidget(widget)
window.setLayout(layout)
window.show()
sys.exit(app.exec_())

# sudo mount -t overlay -o lowerdir=a,upperdir=/to,workdir=/temp overlay /c/
# sudo umount /c